| Company name | Reg. code |
|---|---|
| BRAINSLY OÜ | 17419884 |
| BRAINWAY OÜ | 16398683 |
| BRAINJEY OÜ kustutatud | 16402120 |
| BRANDLY OÜ | 17455182 |
| BRAINY OÜ | 16546221 |
| PIXEL BRAINS OÜ kustutatud (former name Flair Digital OÜ) | 14353558 |
| INTERACTIVE BRAINS OÜ | 16000930 |
| BOILING BRAINS OÜ | 16515479 |
| NORDIC BRAINS OÜ kustutatud | 12106407 |
| GOLDEN BRAINS OÜ kustutatud | 12674459 |
| 3 BRAINS INTELLIGENCE OÜ (former name 3 Brains Intellingence OÜ) | 17416130 |
| BRAINY EDUCATION OÜ | 16148383 |
| BRAINY CIRCLES OÜ | 17226352 |
| BRAINY PAWS OÜ | 16274946 |
| BRAINS DEVELOPMENT OÜ | 16696038 |
| BRAINY MEDIA AGENCY OÜ | 16492366 |
| ROCKET BRAINS TECHNOLOGIES OÜ | 16054943 |
| THE BRAINY BAND OÜ | 12967121 |
| TRANSLY OÜ (former name Perevod OÜ) | 16669751 |
| ONDE OÜ kustutatud (former name Multi Brains OÜ) | 12466229 |
| DORFAMINGO OÜ (former name Sudoku Brains OÜ) | 16922351 |